8 search results - page 1 / 2 » Range Minima Queries with Respect to a Random Permutation, a... |
DCG
2011
13 years 5 months ago
2011
SODA
2010
ACM
14 years 8 months ago
2010
ACM
We give an O(n lg n)-time algorithm for counting the number of inversions in a permutation on n elements. This improves a long-standing previous bound of O(n lg n/ lg lg n) that ...
COMPGEOM
2004
ACM
14 years 4 months ago
2004
ACM
We consider the problem of approximate range counting over streams of d-dimensional points. In the data stream model, the algorithm makes a single scan of the data, which is prese...
COMPGEOM
2010
ACM
14 years 3 months ago
2010
ACM
In this paper, we introduce a simple, randomized dynamic data structure for storing multidimensional point sets, called a quadtreap. This data structure is a randomized, balanced ...
SIBGRAPI
2008
IEEE
14 years 5 months ago
2008
IEEE
Range searching is a fundamental problem in computational geometry. The problem involves preprocessing a set of n points in Rd into a data structure, so that it is possible to det...